prescriptive
Pronunciation: /prɪˈskrɪptɪv/
adjective
- 1relating to the imposition or enforcement of a rule or method: these guidelines are not intended to be prescriptive
- Linguistics attempting to impose rules of correct usage on the users of a language: a prescriptive grammar bookOften contrasted with descriptive.


Origin:
mid 18th century: from late Latin praescriptivus 'relating to a legal exception', from praescript- 'directed in writing', from the verb praescribere (see prescribe)